Bookbinding-sheet.



No. 689,874. Patented nec; 3|, mm.

F. HAGER. v

BDDKBINDING SHEET.

. (Application tiled June 16, 1900A.) (No Model.)

Alo

UNITED STATES PATENT OFFICE.

ASSIGNMENTS, TO VPElItlECTION NEW YORK.

BOOK-BACK CO., A CORPORATION OF BOOKBINDING-SHEET.

SPECIFICATION forming part of Letters Patent No. 689,874, dated December 31, 1901- Application tiled June 16, 1900. Serial No. 20.489. (No model.)

To all whom it nto/,y concern:

Be it known that I, FREDERICK HAGER, a citizen of the United States, and a resident of 547 Fourth street, Portland, county of Multnomah, and State of Oregon, have invented certain new and useful Improvements in Bookbinding-Sheets,of which the following is a specification, reference being had to the accompanying drawings,forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to an improvement of Patent No. 651,351, which was granted to' lne on the 12th day of June, 1900, for an improvement in book-backing of the class employed in the art of bookbinding for backingv and assembling the several signatures comprisin g a book-body.

Ther improvement embodies astrip-sheet and a flexible base; and the object thereof is to provide an ecient article vof this character in which the plurality of strips embodying the strip-sheet are all connected to each otherl in parallel alinement.

The improvement will be hereinafter fully described, and specifically set forth in the annexed claims. y

In the accompanying drawings, forming part of this specification, Figure lis a face or plan View of a back embodying my improvements, and Fig. 2 is a detail transverse sectional view taken'on the line 2 2 of Fig. l.

In the bookbinders art these backs have been formed by pasting separate strips of back irregular and precludes its perfect operation when applied in position in the binding of the book. It'is the purpose of my presentimprovement to entirely obviate the above disadvantages and to produce aback in which the pairs of-strips embodied in an integral sheet will be in perfect and accurate alinement, 'so that the maximum degree of efficiency and operation is secured and the time necessaryin an effort to aline the severed strips is saved.

Referring to the drawings, A designates the [iexible base or sheet, which may be of fabric or any other suitable or desired material.

B designates the strips of cardboard or analogous material which are pasted upon the flexible base. These strips are produced by approved machinery in a series of pairs b l), having their meeting edges abutting and connected to each other by integral bridges embodying theV unsevered portions of material im, whereby a plurality of pairs are connected to each other to provide a sheet of desired width, said pairs being in perfectly parallel relative position and separatedv by the narrow intervening spaces b'; but the strips of the respective pairs are connected by narrow 'integral necks n, extending across the intervening spaces b'. In practice the series of strips as just above described are prolvided upon their backs with mucilage or other suitable adhesive substance by which they may be pasted upon the flexible base A, and it will be understoodthat the narrow integral connecting-necks n and bridges 'm will retain the strips in permanent connecltion and parallel aline ment until they are secured to the flexible base, thus avoiding all guesswork, loss of time, andthe use of the eye in securing a parallel alinementof the strips.

Another important feature of rnyirnprovements is that the adhesive substance is applied to and carried upon theback of the connecting-.strips, so that only that part ofthe Iiexible base which is covered by the strips receives any of the adhesive substance, while in the practice heretofore pursued in the art in the operation of pasting single strips one by one upon the flexible base the adhesive substance was first applied to the whole surface of the flexible base and the strips were set upon said adhesive surface, which operation was not only uncleanly, but the adhesive substance also caused the ilexible base to shrink and become stiff and hard.

IOO

The operation and advantages of my invention will be readily understood by those skilled in the art to which it appertains. The severalgsignatu res comprising the book-body 5 are respectively sewed to the flexible base A by means of threads which pass through the said base into the space b2. The strips are then folded upon each other in accordion plaits to bring the several signatures together and Io form the book-body. The integral narrow connecting-necks n will not interfere to any degree whatever with the flexibility secured by the intervening spaces b when my improved backing is applied in position, and

I5 after the strips are secured upon the flexible base and the backing is in position the dividing cut line Z between the respective strips of each pair which forms the abutting edges of each strip will open up freely and the 2o bridges on will be readily fractured, while the exact uniform size of the spaces b will insure a true and perfect operation.

I do not confine myself to the specific details of mechanical construction as herein z5 shown and described, as it is obvious that under the scope of my invention I am entitled to structural variations.

Having thus described my invention, what Iclaim as a new and useful improvement of 3o the invention described and claimed in my Patent No. 651,351, and desire to secure byV Letters Patent, is-- l. As a new article of manufacture, an integral strip-sheet for backing and assembling book-signatures, embodying a plurality of pairs of strips, adjacent members of two pairs being connected by bridges, and the members of each pair being in parallel position with a uniform intervening space bridged by inte- 4o gral narrow connecting-necks extending between them, substantially as shown and described.

2. As a new article of manufacture, an iutegral stri p-sheet for backing and assembling book-signatures, embodying pairs of strips, adjacent members of two pairs having their meeting edges abutting and bridged by uncut parts, and the members of each pair being in parallel position and separated by a uniform intervening space and bridged by inte- `;o gral narrow connecting-necks extending between the strips of the respective pairs, substantially as shown and described.

3. As an improved article of manufacture, an integral strip-sheetfor backing and assembling book-signatures, embodying pairs of strips in parallel position, adjacent members of two pairs being connected by bridges, and the members of each pair being separated by a uniform intervening space bridged by in- 6o 're-gral narrow connecting-necks, said stripsheet being provided with and carrying upon its back an adhesive substance, whereby it may be applied to a flexible base, substam tially as shown and described.

4. As an improved boolrbinding-sheet for assembling booksignaturesahe combination, with a flexible base, or fabric, of-an integral strip-sheetembodying pairs of strips adjacent members of two pairs having their abutting 7o edges connected by integral bridges and placed in parallel position, the members of each pair being separated by a uniform intervening space bridged by integral narrow connecting-necks, and an adhesive agent attaching said strip-sheet to the flexible base, substantially'as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in 'presence of two witnesses, this 28th day of May, 8o 1900.

FREDERICK HAGER.

Witnesses:

Il. B. ADAMS, D. McDoNAUGH. 

